age = int(input('请输入年龄：'))

if age <= 6:
    step = '童年'
elif 7 <= age <=17:
    step = '少年'
elif 18 <= age <= 40:
    step = '青年'
elif 41 <= age <= 65:
    step = '中年'
else:
    step = '老年'

print(str(age)+'属于'+step)